Eventos Anais de eventos
EPTT 2024
14th Spring School on Transition and Turbulence
Analysis of dynamic stall for a simplified single blade vertical axis wind turbine configuration
Submission Author:
Lucas Feitosa de Souza , SP
Co-Authors:
Lucas Feitosa de Souza, Renato Fuzaro Miotto, William Wolf
Presenter: Lucas Feitosa de Souza
doi://10.26678/ABCM.EPTT2024.EPT24-0055
Abstract
The dynamic stall features of a simplified vertical axis wind turbine (VAWT) configuration are analyzed. Wall-resolved large eddy simulations (LES) are performed for a NACA0018 airfoil operating as a single blade VAWT, and the operational parameters are set to tip speed ratio lambda = 3, Reynolds number Re = 50,000 and Mach number M = 0.1. The numerical model is validated by performing a grid convergence study as well as an analysis of the airfoil spanwise domain. Results suggest that a computational domain with 40% of the airfoil chord in the spanwise direction is sufficient to capture the underlying flow dynamics when compared with span lengths of 10% and 80% of the chord. A good agreement with literature results is observed in terms of the main flow features for similar setups both in terms of integral quantities and the overall flow behavior.
Keywords
LES, Vertical axis wind turbines, dynamic stall, Unsteady Aerodynamics
